.plus-loader:not(:required) {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 48px;
    margin-bottom: 10px;
    overflow: hidden;
    text-indent: -9999px;
    background: #f86;
    -moz-border-radius: 24px;
    -webkit-border-radius: 24px;
    border-radius: 24px;
    -moz-transform: rotateZ(90deg);
    -ms-transform: rotateZ(90deg);
    -webkit-transform: rotateZ(90deg);
    transform: rotateZ(90deg);
    -moz-transform-origin: 50% 50%;
    -ms-transform-origin: 50% 50%;
    -webkit-transform-origin: 50% 50%;
    transform-origin: 50% 50%;
    -moz-animation: plus-loader-background 3s infinite ease-in-out;
    -webkit-animation: plus-loader-background 3s infinite ease-in-out;
    animation: plus-loader-background 3s infinite ease-in-out;
}

.plus-loader:not(:required)::after {
    position: absolute;
    top: 0;
    right: 50%;
    width: 50%;
    height: 100%;
    content: "";
    background: #f86;
    -moz-border-radius: 24px 0 0 24px;
    -webkit-border-radius: 24px;
    border-radius: 24px 0 0 24px;
    -moz-transform-origin: 100% 50%;
    -ms-transform-origin: 100% 50%;
    -webkit-transform-origin: 100% 50%;
    transform-origin: 100% 50%;
    -moz-animation: plus-loader-top 3s infinite linear;
    -webkit-animation: plus-loader-top 3s infinite linear;
    animation: plus-loader-top 3s infinite linear;
}

.plus-loader:not(:required)::before {
    position: absolute;
    top: 0;
    right: 50%;
    width: 50%;
    height: 100%;
    content: "";
    background: #fc6;
    -moz-border-radius: 24px 0 0 24px;
    -webkit-border-radius: 24px;
    border-radius: 24px 0 0 24px;
    -moz-transform-origin: 100% 50%;
    -ms-transform-origin: 100% 50%;
    -webkit-transform-origin: 100% 50%;
    transform-origin: 100% 50%;
    -moz-animation: plus-loader-bottom 3s infinite linear;
    -webkit-animation: plus-loader-bottom 3s infinite linear;
    animation: plus-loader-bottom 3s infinite linear;
}

@keyframes plus-loader-top {
    2.5% {
        background: #f86;
        -moz-transform: rotateY(0deg);
        -ms-transform: rotateY(0deg);
        -webkit-transform: rotateY(0deg);
        transform: rotateY(0deg);
        -moz-animation-timing-function: ease-in;
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
    }

    13.75% {
        background: #ff430d;
        -moz-transform: rotateY(90deg);
        -ms-transform: rotateY(90deg);
        -webkit-transform: rotateY(90deg);
        transform: rotateY(90deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    13.76% {
        background: #ffae0d;
        -moz-transform: rotateY(90deg);
        -ms-transform: rotateY(90deg);
        -webkit-transform: rotateY(90deg);
        transform: rotateY(90deg);
        -moz-animation-timing-function: ease-out;
        -webkit-animation-timing-function: ease-out;
        animation-timing-function: ease-out;
    }

    25% {
        background: #fc6;
        -moz-transform: rotateY(180deg);
        -ms-transform: rotateY(180deg);
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
    }

    27.5% {
        background: #fc6;
        -moz-transform: rotateY(180deg);
        -ms-transform: rotateY(180deg);
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
        -moz-animation-timing-function: ease-in;
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
    }

    41.25% {
        background: #ffae0d;
        -moz-transform: rotateY(90deg);
        -ms-transform: rotateY(90deg);
        -webkit-transform: rotateY(90deg);
        transform: rotateY(90deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    41.26% {
        background: #2cc642;
        -moz-transform: rotateY(90deg);
        -ms-transform: rotateY(90deg);
        -webkit-transform: rotateY(90deg);
        transform: rotateY(90deg);
        -moz-animation-timing-function: ease-out;
        -webkit-animation-timing-function: ease-out;
        animation-timing-function: ease-out;
    }

    50% {
        background: #6d7;
        -moz-transform: rotateY(0deg);
        -ms-transform: rotateY(0deg);
        -webkit-transform: rotateY(0deg);
        transform: rotateY(0deg);
    }

    52.5% {
        background: #6d7;
        -moz-transform: rotateY(0deg);
        -ms-transform: rotateY(0deg);
        -webkit-transform: rotateY(0deg);
        transform: rotateY(0deg);
        -moz-animation-timing-function: ease-in;
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
    }

    63.75% {
        background: #2cc642;
        -moz-transform: rotateY(90deg);
        -ms-transform: rotateY(90deg);
        -webkit-transform: rotateY(90deg);
        transform: rotateY(90deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    63.76% {
        background: #1386d2;
        -moz-transform: rotateY(90deg);
        -ms-transform: rotateY(90deg);
        -webkit-transform: rotateY(90deg);
        transform: rotateY(90deg);
        -moz-animation-timing-function: ease-out;
        -webkit-animation-timing-function: ease-out;
        animation-timing-function: ease-out;
    }

    75% {
        background: #4ae;
        -moz-transform: rotateY(180deg);
        -ms-transform: rotateY(180deg);
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
    }

    77.5% {
        background: #4ae;
        -moz-transform: rotateY(180deg);
        -ms-transform: rotateY(180deg);
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
        -moz-animation-timing-function: ease-in;
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
    }

    91.25% {
        background: #1386d2;
        -moz-transform: rotateY(90deg);
        -ms-transform: rotateY(90deg);
        -webkit-transform: rotateY(90deg);
        transform: rotateY(90deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    91.26% {
        background: #ff430d;
        -moz-transform: rotateY(90deg);
        -ms-transform: rotateY(90deg);
        -webkit-transform: rotateY(90deg);
        transform: rotateY(90deg);
        -moz-animation-timing-function: ease-in;
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
    }

    100% {
        background: #f86;
        -moz-transform: rotateY(0deg);
        -ms-transform: rotateY(0deg);
        -webkit-transform: rotateY(0deg);
        transform: rotateY(0deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }
}

@keyframes plus-loader-bottom {
    0% {
        background: #fc6;
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    50% {
        background: #fc6;
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    75% {
        background: #4ae;
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    100% {
        background: #4ae;
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }
}

@keyframes plus-loader-background {
    0% {
        background: #f86;
        -moz-transform: rotateZ(180deg);
        -ms-transform: rotateZ(180deg);
        -webkit-transform: rotateZ(180deg);
        transform: rotateZ(180deg);
    }

    25% {
        background: #f86;
        -moz-transform: rotateZ(180deg);
        -ms-transform: rotateZ(180deg);
        -webkit-transform: rotateZ(180deg);
        transform: rotateZ(180deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    27.5% {
        background: #6d7;
        -moz-transform: rotateZ(90deg);
        -ms-transform: rotateZ(90deg);
        -webkit-transform: rotateZ(90deg);
        transform: rotateZ(90deg);
    }

    50% {
        background: #6d7;
        -moz-transform: rotateZ(90deg);
        -ms-transform: rotateZ(90deg);
        -webkit-transform: rotateZ(90deg);
        transform: rotateZ(90deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    52.5% {
        background: #6d7;
        -moz-transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
        transform: rotateZ(0deg);
    }

    75% {
        background: #6d7;
        -moz-transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
        transform: rotateZ(0deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }

    77.5% {
        background: #f86;
        -moz-transform: rotateZ(270deg);
        -ms-transform: rotateZ(270deg);
        -webkit-transform: rotateZ(270deg);
        transform: rotateZ(270deg);
    }

    100% {
        background: #f86;
        -moz-transform: rotateZ(270deg);
        -ms-transform: rotateZ(270deg);
        -webkit-transform: rotateZ(270deg);
        transform: rotateZ(270deg);
        -moz-animation-timing-function: step-start;
        -webkit-animation-timing-function: step-start;
        animation-timing-function: step-start;
    }
}